Fits the Apple Watch 38mm, Apple Watch 40mm, Apple Watch 41mm Silicone construction features reinforced stitching for everyday durability, with extra water and sweat resistance Breathable, lightweight, and ultra-thin design ensures exceptional comfort Concealed magnetic closure system stays securely fastened while on the go Medium/large band is adjustable to ensure a perfect fit Specially designed watch strap ensures seamless connection to your smartwatch Sleek charcoal hue gives your Apple watch a modern look